Swift heavy ion induced interface modification in Ni/Ge

This paper reports on the formation of Ni2Ge alloy through interface modification of Ni/Ge bilayer structure using 100 MeV Au-ion irradiation at different temperatures and fluences. Compositional analysis and calculation of mixing efficiency were performed by Rutherford backscattering spectrometry. High resolution cross-sectional transmission electron microscopy was carried out for thickness determination and structure determination. Alloy formation has been discussed on the basis of swift heavy ion irradiation induced effects